Tierversuche mit Cannabis und CBD

Science/Animal: High doses of CBD may have negative effects on the heart.

In a study with rats CBD in a dose of 10 mg per kilogram bodyweight impaired relaxing effects of other medications and in healthy “hearts CBD led to untoward structural and functional effects.”
Authors concluded that “due to its modest beneficial effect in hypertension and its adverse effects in normotensive hearts, caution should be taken when using CBD as a drug in therapy.”

https://pubmed.ncbi.nlm.nih.gov/33338514/